US5232808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatographic toner and developer containing a fluorinated β-diketone metal complex charge-control agent
Assignee: Eastman Kodak Co
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Filing: 1991-12-20
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Granted: 1993-08-03
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Expires: 2011-12-20
Abstract
Abstract Electrostatographic toners and developers are provided containing styrene-acrylic copolymer binders and charge-control agents comprising fluorinated β-diketone metal complexes having the structure: ##STR1## where R is alkyl or aryl, M is calcium, barium or zinc, and n is a positive number up to 7.
Inventors
- 👤 Steven M. Bonser
- 👤 John C. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:58
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G9/09766; G03G9/09783
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
46 words
A dry, particulate, electrostatographic toner composition comprising a styrene-acrylic copolymer binder and a charge-control agent comprising a fluorinated β-diketone metal complex having the structure: ##STR5## where R is alkyl or aryl, M is calcium, barium or zinc, and n is a positive number up to 7.
Claim 2
Dependent Claim
46 words
A dry, particulate, electrostatographic toner composition comprising a styrene-acrylic copolymer binder and a charge-control agent comprising a fluorinated β-diketone metal complex having the structure: ##STR5## where R is alkyl or aryl, M is calcium, barium or zinc, and n is a positive number up to 7.
Claim 3
Dependent Claim
28 words
The toner composition of claim 1, wherein R is alkyl containing up to 4 carbon atoms and n is a number in the range of 2 to 4.
Claim 4
Dependent Claim
10 words
The toner composition of claim 2, wherein. M is zinc.
Claim 5
Dependent Claim
10 words
The toner composition of claim 2, wherein M is calcium.
Claim 6
Dependent Claim
10 words
The toner composition of claim 2 wherein M is barium.
Claim 7
Dependent Claim
13 words
The toner composition of claim 1, wherein the metal complex is bis(1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionato) zinc.
Claim 8
Dependent Claim
13 words
The toner composition of claim 2 wherein the metal complex is bis(1,1,1,2,2,3,3,-heptafluoro-7,7-dimethyl-4,6-octanedionato) calcium.
Claim 9
Dependent Claim
13 words
The toner composition of claim 2 wherein the metal complex is bis(1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionato) barium
Claim 10
Dependent Claim
13 words
The toner composition of claim 2, wherein the binder is styrene-alkyl acrylate copolymer.
Claim 11
Dependent Claim
13 words
The toner composition of claim 3, wherein the binder is styrene-alkyl acrylate copolymer.
Claim 12
Dependent Claim
12 words
The toner composition of claim 3, wherein the binder is poly(styrene-co-n-butyl acrylate-co-divinylbenzene).
Claim 13
Dependent Claim
16 words
An electrostatographic developer comprising: a. the particulate toner composition of claim 1 and b. carrier particles.
Claim 14
Dependent Claim
19 words
The electrostatographic developer of claim 12, wherein the particulate toner composition is a color toner composition comprising a colorant.
Claim 15
Dependent Claim
17 words
The electrostatographic developer of claim 13, wherein the colorant is a blue, green, red or Yellow colorant.
Claim 16
Dependent Claim
13 words
The electrostatographic developer of claim 14 wherein the colorant is a blue colorant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-02 | 1997-02-01 | 1997-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-02 | 2001-02-01 | 2001-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-02 | 2005-02-01 | 2005-08-03 | $7700.00 | Window Closed / Lapsed |